Is there an association between date of birth and date of death? A statistical investigation on exit and transcendence into the eternal world

The idea of this study came out long time ago, in relation to some personal unfortunate events. I have extended my research on 10000 funerary inscriptions and documents from civil and military tombs to find out if the relation between the date of birth and the date of death is significantly correlated . Our findings point out that in about 75% cases the date of death is up to 2 months before or after the date of birth. This suggests a genetic determinism of death moment